Figure9.1.Single-phase and three-phase power supplies.
The set electrician needs to have only a basic knowledge of electricity but must have a firm grasp of the fundamentals. For our purposes, we must start with an understanding of the four basic measurements of electricity: volts, amps, watts, and ohms. From there we will look at the issues that confront a set electrician and briefly review standard set operating procedure for the electrical crew.
Electrical current occurs when a positively charged pole is connected to a negatively charged pole. In direct current (DC) it flows from negative to positive. Direct current ...
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